Home / 921,219.51-1,271,377.51-553,815.58

Finding the Fourth Proportional to 921,219.51, 1,271,377.51 and 553,815.58

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Solution

The fourth proportional to 921,219.51, 1,271,377.51 and 553,815.58 is: 764,322.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,219.51 : 1,271,377.51 = 553,815.58 : x
  2. Step 2: Convert to fraction form
    921,219.51/1,271,377.51 = 553,815.58/x
  3. Step 3: Cross multiply
    921,219.51x = 1,271,377.51 × 553,815.58
  4. Step 4: Simplify right side
    921,219.51x = 704,108,673,099.61
  5. Step 5: Solve for x
    x = 704,108,673,099.61/921,219.51
  6. Step 6: Final answer
    x = 764,322.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.